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Table 1 Classification of regional lymph nodes of the pancreas

From: Proposing the lymphatic target volume for elective radiation therapy for pancreatic cancer: a pooled analysis of clinical evidence

No. of Study

Studies

Year

Location of Tumors

No. of Patients

LN Positivity

1

Brunner TB [16]

1978-1997

Head

178

NA

2

Matsuno S [1]

1981-2002

Head

4913

NA

3

Kayahara M [17]

1974-1996

General*

99

78%

4

Sierzega M [18]

1980-2002

Head

96

66.70%

5#

Nagakawa T [19]

1973-1989

Head

42

78.60%

6

Nagakawa T [20]

1973-1989

Head

42

78.60%

7

Capussotti L [21]

1988-1998

Head

100

59%

8

Cubilla AL [22]

1974-1976

General*

22

86.40%

9

Nakao A [23]

1981-1995

Body/tail

30

46.70%

10

Nagai H [24]

1980-1983

General*

8

75%

11

Kayahara M [25]

1980-1994

Body/tail

20

80%

12

Kayahara M [26]

N/A

Head

44

70.50%

13

Yoshida T [27]

1995-1999

Head

34

NA

14

Sakai M [28]

1981-2002

Head

178

66%

15

Gerdes B [29]

1995-2002

Head

50

64%

16

Ishikawa O [30]

1981-1994

Head

81

73%

17

Kayahara M [31]

1973-1991

Head

49

76%

18

Kocher HM [32]

N/A

General*

10

80%

  1. #The patients of Study No.5 are same as those of Study No.6.
  2. N/A = not applicable; * "General" indicates the location of tumor in that study include either head or body/tail.